/*
 * @Author: c
 * @Date: 2023-12-18 12:35:37
 * @LastEditTime: 2023-12-22 14:47:40
 * @LastEditors: c
 * @Description: 
 * @FilePath: \music-web-backend\src\common\decorators\cals.decorator.ts
 * https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
 */
// Copyright 2023 Administrator
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import { AnyMongoAbility } from "@casl/ability";
import { SetMetadata } from "@nestjs/common";

export enum CHECK_POLICIES_KEY {
    HANDLER = 'CHECK_POLICIES_KEY',
    CAN = 'CHECK_POLICIES_CAN',
    CANNOT = 'CHECK_POLICIES_CANNOT',
}

interface IPolicyHandler {
    handle(ability: AnyMongoAbility): boolean;
}

type PolicyHandlerCallback = (ability: AnyMongoAbility) => boolean;

export type PolicyHandler = IPolicyHandler | PolicyHandlerCallback;


export const CheckPolicies = (...handlers: PolicyHandler[]) =>
    SetMetadata(CHECK_POLICIES_KEY.HANDLER, handlers);
